Metallurgical apparatus – With control means responsive to sensed condition – With analyzer or computation means
Patent
1976-05-25
1977-10-18
Dost, Gerald A.
Metallurgical apparatus
With control means responsive to sensed condition
With analyzer or computation means
266158, C21C 540
Patent
active
040542742
ABSTRACT:
A method of avoiding emission of carbon monoxide from the exhaust gases of oxygen converters comprises collecting the gases of the converter in a cooling stack and directing the gases from the cooling stack through a dust collector to a clean gas stack in which they are permitted to flow out through the top and preferably through a burning device for burning them off. To insure that the gases remain burnable an additional fuel gas is fed into the clean gas stack for combining with the other gases and in quantities which are proportional to the content of carbon monoxide and oxygen in the gases which are circulated. An apparatus for carrying out the method includes a connection between a cooling gas stack in which the gases are collected from the converter to a clean gas stack which includes a dust collector and a blower for circulating the gases. Sensing means are provided preferably before the dust collector for sensing the carbon monoxide concentration and before the circulating blower for sensing the oxygen concentration and these sensing parameters are used to control a valve for the admission of separate fuel gas into the clean gas stack for combining with the other gases so that they may be burned to the top of the clean gas stack in a torch burn off device.
REFERENCES:
patent: 3357820 (1967-12-01), Rasworschegg et al.
Dost Gerald A.
Gutehoffnungshutte Sterkrade Aktiengesellschaft
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